This is an all in one stem, base bar, aerobar. 970 grams for the whole thing - about as light a setup as you can get. 40cm width (c-c). Fits 1" or 1 1'8" steerer. 140mm of extension adjustment. Pads adjust left to right. Other than a few scratches at the base of the extensions where they slide in, you can hardly tell these from new. I also have a set of homemade 1" risers that I will throw in. $125 firm + shipping. Thanks in advance for the comments on the carpet. Here's a link to the site for these:

http://www.aeruscomp.com/bars.html